Use this acrylic extender medium to slow down drying time, create transparent colors and washes or to improve the paint flow in detail and liner work. It has a fluid consistency that thins all acrylic paint and mediums and increases open time - the time that painters have to blend, spread and work wet-in-wet. It also increases blending time, making blending of colors and detail brushwork easier. Archival Reduces paint skinning over on the palette Mix with Liquitex acrylic paints and mediums to retard drying time up to 50%